ul.dropdown,
ul.dropdown li,
ul.dropdown ul {
 list-style: none;
}

ul.dropdown {
 position: relative;
 z-index: 597;
 float: left;
}

ul.dropdown li {
 float: left;
 vertical-align: middle;
 zoom: 1;
}

ul.dropdown li.hover,
ul.dropdown li:hover {
 position: relative;
 z-index: 599;
 cursor: default;
}

ul.dropdown ul {
 visibility: hidden;
 position: absolute; 
 top: 100%;
 left: 0; 
 z-index: 598;
 width: 100%;
}


ul.dropdown ul li {
 float: left;  line-height:18px;
}

ul.dropdown ul ul {
 top: 1px; position: relative;
 left: 0; right:0px;  z-index: 598;
}

ul.dropdown li:hover  ul, ul.dropdown li.hover  ul {
 visibility: visible;
}